Gas-engine



(No Model.)

C. SINTZI GAS ENGINE.

No. 416,649. y Patented 1399.3; 18891` WW I L aw/LM/c/ V.7%6150 ruf/g.

mmmmmmmmmmmmmmmmmmmmmmmmmmmmm ma UNITED lSTATES PATENT OFFICE. i

CLARK SINTZ, OF SPRINGFIELD, OHIO.

GAS-ENGINE.

Y SPECIFIGATION forming part of Letters Patent No. 416,649, datedDecember 3, 1889.

Application filed February 20,1889. Serial Nox 300,595. (No model.)

To all whom it may concern:

Be it known that I, CLARK SINTZ, a citizen of the United States,residing at Springfield, in the county of Clark and State of Ohio, haveinvented certain new and useful Improvements in Gas-Engines, of whichthe following is a specicatiomreference being had therein to theaccompanying drawings.

This invention relates to certain new and useful improvements ingas-engines; and the improvements have reference to a mixingvalve,whereby the two constituents or ingredients of which the explosive agentis composed can bemeasured and determined, so as to preserve theirpredetermined proportions,

` while the amount of each ingredient is lessoV sened or increasedaccording to the speed at which the engine is traveling and according tothe load or amount of labor which it is performing; and the improvementsalso have reference to the means of actuating the valvestem and itsvalves, so that when the engine shall reach the maximum of speed theactuation of the valve shall automatically be discontinued andautomatically recommenced upon the lowering of the4 Speed, for`thepurposes and in the manner hereinafter more fully pointed out. 4

In the accompanying drawings, forming a part of this specification, andon which like reference-letters indicatecorrespondingparts, Figure V1represents a side elevation ot' a gas-` engine of any approved type withmy improvements applied thereto; Fig. 2, a rear elevation of 4a portionof the cylinder and also showing my improvements applied thereto; Fig.3, an enlarged detail sectional view of the mixing-valve, showing theconstruction of the parts; Fig. 4, a detail perspective View of one endof the bracket which supports the mixing-valve, and Fig. 5 a detailsectional view of the lever for actuating the valvestem.

The letter A designates the carburetingtank in which one constituent ofthe explosive agent is carbureted; the letter B, the eugine-bed,preferably secured upon said tank;

and the letter O the cylinder, secured to the bed B in any suitablemanner. These several features are preferably substantially of the typeshown and described in Letters Patent granted to me May 29,v `1838,

vided with a box or shell E, made 'integral with the bracket orseparately and secured to it. To the innerside of this box connects apipe F, 'which leads either directly to the engine-cylinder or throughsuitable intermediate mechanism-as, for instance, the valvechest G.(Shown in Fig. 2.) This chest or any other intermediate mechanismthrough which the motive agent passes from the pipe F in its passage tothe cylinder forms no part of the present invention, in which theintermediate instrumentalities may or may not be used in connection withthe use of the mixing-valve and this valve and its adjunct, which formthe subject of the present invention. v

The letter H refers to the mixing-valve shell or casing, preferably madeof cast metal or of brass, and consisting of chambers I and J, with anair-passage K between them.

This shell is bolted or otherwise secured to the box E, as seen in Fig.2,`and so arranged that the point of the-outlet L of the chamber .I iscoincident with the open end M of Athe box E. The chamber I is incommunication with the open air throughan orifice O in one side of thechamber, anda cut-oft-valve casing is preferably employed andconnectedwith the shell I-I opposite the orifice O, and

provided with a flap or other form of valve Q, which opens to the inflowof air and closes` The interior of the extension R of the shell Hcommunicates with theA against its exit.

chamber J through a gas-passage S. Apipe T, communicating with thegas-supply, connects with the extensionR at the inlet-orice U, as bybeing screwed into said orifice. `I prefer to connect this pipeT withthe tankA, as seen in Fig. 1. At least such is the case when I employcarbureted carbon dioxidethat is to say, when I employ the carburetedresiduum of the explosions or exhaust product of the engine as theexplosiveingredient of the motive agent, as 'more fully set` forth andclaimed in an application filed by me December 28, 1888, Serial No.294,225, for such compound and method of generating 'r oo the same. Thispipe is preferably provided with a'cut-off V and also has a checkvalve-stem Y, having valves Y and Z,which pulley is carried by thisshaft.

respectively control the air-passage K and the gas-passage S. It will beobserved that the diameters or areas of these passages are unequal, theair-passage being in excess of the gas-passage. The object of this is tosupply the proper amount ofY atmospheric air to the chamber J for thequantity of the car- Vbureted ingredient, or gas,.as the case may be,which enters said chamber J through they passage S. The valves Y and Zare xed on the stem Y, and are so arranged that both of them seat at thesame time, so as to simultaneously cut off the admission of air and theadmission of the carbureted ingredient or the gas which enters into thecompound constituting the explosive agent.

g I have hereinbefore stated that the object in view was to maintainlapredetermined proportion of the explosive and non-explosive ingredientsof the motive agent, while the quantity of such ingredients and thevolume of the compound admitted to the cylinder would vary with thespeed and labor of the engine. The valve-stem Y is therefore actuated insuch manner that the length of its stroke will begreatest when theengine is running at the lowest speed, and will gradually shorten as theengine increases in speed, and will finally rest or become inactive withthe valves seated and the passages K and S closed when the enginereaches, and so long as it maintains, its maximum speed. The degree ofspeed which may con stitute this maximum speed will vary according tothe desire of the user, and will be effected by the particularadjustment of thev governor mechanism.

I have shown and will now proceed to describe one form v. of. suchmechanism, and the intermediate instrumentalities by which thevalve-stem Y is operated in the manner above described, at the same timeremarkin g that such governor does not form the subject of the presentinvention, and that I do not wish to be understood as limiting myself tothe use of it. The usual main shaft a is mounted in the bed B, and theusual belt- To one of the spokes c of this wheel I pivot, through a pind, the arm e of an eccentric f. This eccentric is as much larger thanthe diameter of the shaft Ct as may be desired under differentcircumstances, and this difference in diameter will determine themaximum stroke of the valve-stem Y. Governor-arms g and 7L are pivotedto opposite spokes in the wheelh and provided with adjustable weightst', and connected with the arm e of the eccentric by links j and 7c, thelinks being so arranged with respect to the pivotal points of the arms gand 7L that the centrifugal action of the weights 'L' cause the weightsto operate in unison and turn the arm e on its pivot in such a directionas to lessen the eccentricity between the eccentric and the shaft a,which of course decreases the throw of the eccentric. The eccentric isnormally held in a position to give its greatest throw by means of a rodZ, secured to the arm e and slidingly mounted in one of the spokes ofthe wheel, with a spiral spring m interposed between said spoke and armand a nut o. The spring tends to force the arm e in the oppositedirection to the movement which is given by the centrifugal action ofthe weights. An eccentricrod p is mounted on the eccentric f, andconnected at its other end with a pivoted arm g, slotted, as seen in.Fig.r5, to move freely over the valve-stem Y. This stem is providedwith a stop, preferably an adjustable stop, composed of a nut fr',against which the arm g strikes to move the same outward, whilethe stemis moved inward by its spring H. The position of the stop is such thatit will not be reached by the arm g when the strokes of the arm growshorter than a predetermined length by reason of the shortening of thethrow of the eccentric to minimum, or a'pproximately so, by the maximumor approximately maximum speed of the engine. The effect of the failureof the arm g to reach the stop r is simply to fail to actuate the stem Yand valves and to cut off the further supply of the motive agent to thecylinder. This continues until the engine lowers its speed by partiallyspending its momentum. Vhen this occurs, the governor mechanism allowsthe throw of the eccentric to increase, and consequently the throw ofthe eccentric-rod p and the length of the stroke of the arm g, suchincreased stroke of said arm enabling it to reach the st'op r and tomove the valvestem a greater or less distance, according to the rate ofthe speed of the engine, the stroke increasing as the speed lessens, andthe valves Y and Z moving farther from their seats and admitting agreater quantity, though'preserving the proportion, of the motive agent.

Having thus fully described my invention,

what I claim as new, and desire to secure by Letters Patent, is*- l. Thecombination, with a gas enginegovernor mechanism, an eccentriccontrolled thereby, an eccentric-rod, and a pivoted arm vibrated by saidrod, vof amixing-valve having air and gas passages leading to afcommonchamber, a valve-stem having a valve for each of said passages, and astop with which said arm engages or not, according to the length of itsvibration, and a spring to normally seat said valves.

2. The combination,with abracket secured to or near to the enginestructure and having a box-like formation, a pipe leading from said boxto conduct the motive agent toward the cylinder, of a mixing-valve shellsecured to said box, a chamber in said shell communi- IOO IIO

.ITS

eating with saidlboxV7 air and gas passages nected to one end of saidformatiomsubstan- 1o leading to said chamber, avalVe-stem mounted tiallyas shown and described.

in said shell and having a valve for each of In testimony whereof I axmysignature said passages, the passages being of different in presenceof two witnesses diameter. p

3. Ina gas-engine, a bracket constructed CLARK SINTZ to be secured tothe engine structure at o1' Witnesses: near one end and fashioned at theother end RANDOLPH COLEMAN, With a boX-like formation, and a pipe con-(1C. FUNK.

